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可尝试扩展句子。越复杂的句子,分析结果越丰富。
She calls her best friend Xiao Li at least once a day to see how she is doing and what is going on.
这是一个简单句,可以扩展成分让它变得复杂。
She主语
calls •••谓语动词短语
her best friend ··· Li宾语
at least once ··· day、to see how ··· on.